disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/uapi/linux/ipv6.h
..
..
@@ -4,6 +4,7 @@
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 #include <linux/libc-compat.h>
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 #include <linux/types.h>
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+#include <linux/stddef.h>
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 #include <linux/in6.h>
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 #include <asm/byteorder.h>
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